Sokkia 130R Series Operator's Manual page 152

27. CHECKS AND ADJUSTMENTS
3. While the Meas mode screen is
displayed and the telescope is in
face left, sight the center of the
target and read out the horizontal
angle A1 and the vertical angle
B1.
Example:Horizontal angle A1=18° 34' 00"
Vertical angle B1=90° 30' 20"
4. While the telescope is in face
right, sight the center of the target
and read out the horizontal angle
A2 and the vertical angle B2.
Example:Horizontal angle A2=198° 34' 20"
Vertical angle B2=269° 30' 00"
5. Do the calculations:
A2-A1 and B2+B1
If A2-A1 is within 180°±20"and
B2(B1 is within 360°±40", adjust
ment is unnecessary.
Example:A2-A1 (Horizontal angle)
=198° 34' 20"- 18° 34' 00"
=180° 00' 20"
B2-B1 (Vertical angle)
=269° 30' 00" + 90° 30' 20"
=360° 00' 20"
If the difference is large even after
repeating the check 2 or 3 times,
have your Sokkia service
representative perform the
adjustment.
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